Watson dressed but did not play in Sunday's 35-14 loss to the Titans.
By the time the Texans kicked off Sunday, they knew their playoff fate, so head coach Bill O'Brien took it easy on several skill position players. Locked in as the No. 4 seed in the AFC, O'Brien started backup quarterback AJ MCarron and let him play the entire game. Watson, who was nursing a back injury while preparing for Week 17, is expected to start Houston's wild-card game Saturday against the Bills, who ranked fourth in passing defense during the regular season.